I've been having trouble visualizing 4D objects(4 physical dimensions, excluding time), in fact I cant seem to be able to do it at all.Can someone help me on it? I don't simply want to imagine how they might simply appear in 3D space and show their 3D projections as they pass by. I want to be able to rotate my objects! Is that even possible? I did try googling it, but the results weren't satisfactory.